qxl_drv.c

  1/* qxl_drv.c -- QXL driver -*- linux-c -*-
  2 *
  3 * Copyright 2011 Red Hat, Inc.
  4 * All Rights Reserved.
  5 *
  6 * Permission is hereby granted, free of charge, to any person obtaining a
  7 * copy of this software and associated documentation files (the "Software"),
  8 * to deal in the Software without restriction, including without limitation
  9 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
 10 * and/or sell copies of the Software, and to permit persons to whom the
 11 * Software is furnished to do so, subject to the following conditions:
 12 *
 13 * The above copyright notice and this permission notice (including the next
 14 * paragraph) shall be included in all copies or substantial portions of the
 15 * Software.
 16 *
 17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 18 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
 20 * VA LINUX SYSTEMS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
 21 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
 22 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
 23 * OTHER DEALINGS IN THE SOFTWARE.
 24 *
 25 * Authors:
 26 *    Dave Airlie <airlie@redhat.com>
 27 *    Alon Levy <alevy@redhat.com>
 28 */
 29
 30#include "qxl_drv.h"
 31
 32#include <linux/aperture.h>
 33#include <linux/module.h>
 34#include <linux/pci.h>
 35#include <linux/vgaarb.h>
 36
 37#include <drm/clients/drm_client_setup.h>
 38#include <drm/drm.h>
 39#include <drm/drm_atomic_helper.h>
 40#include <drm/drm_drv.h>
 41#include <drm/drm_fbdev_ttm.h>
 42#include <drm/drm_file.h>
 43#include <drm/drm_gem_ttm_helper.h>
 44#include <drm/drm_module.h>
 45#include <drm/drm_modeset_helper.h>
 46#include <drm/drm_prime.h>
 47#include <drm/drm_print.h>
 48#include <drm/drm_probe_helper.h>
 49
 50#include "qxl_object.h"
 51
 52static const struct pci_device_id pciidlist[] = {
 53	{ 0x1b36, 0x100, PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_DISPLAY_VGA << 8,
 54	  0xffff00, 0 },
 55	{ 0x1b36, 0x100, PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_DISPLAY_OTHER << 8,
 56	  0xffff00, 0 },
 57	{ 0, 0, 0 },
 58};
 59MODULE_DEVICE_TABLE(pci, pciidlist);
 60
 61static int qxl_modeset = -1;
 62int qxl_num_crtc = 4;
 63
 64MODULE_PARM_DESC(modeset, "Disable/Enable modesetting");
 65module_param_named(modeset, qxl_modeset, int, 0400);
 66
 67MODULE_PARM_DESC(num_heads, "Number of virtual crtcs to expose (default 4)");
 68module_param_named(num_heads, qxl_num_crtc, int, 0400);
 69
 70static struct drm_driver qxl_driver;
 71static struct pci_driver qxl_pci_driver;
 72
 73static int
 74qxl_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
 75{
 76	struct qxl_device *qdev;
 77	int ret;
 78
 79	if (pdev->revision < 4) {
 80		DRM_ERROR("qxl too old, doesn't support client_monitors_config,"
 81			  " use xf86-video-qxl in user mode");
 82		return -EINVAL; /* TODO: ENODEV ? */
 83	}
 84
 85	qdev = devm_drm_dev_alloc(&pdev->dev, &qxl_driver,
 86				  struct qxl_device, ddev);
 87	if (IS_ERR(qdev)) {
 88		pr_err("Unable to init drm dev");
 89		return -ENOMEM;
 90	}
 91
 92	ret = pci_enable_device(pdev);
 93	if (ret)
 94		return ret;
 95
 96	ret = aperture_remove_conflicting_pci_devices(pdev, qxl_driver.name);
 97	if (ret)
 98		goto disable_pci;
 99
100	if (pci_is_vga(pdev) && pdev->revision < 5) {
101		ret = vga_get_interruptible(pdev, VGA_RSRC_LEGACY_IO);
102		if (ret) {
103			DRM_ERROR("can't get legacy vga ioports\n");
104			goto disable_pci;
105		}
106	}
107
108	ret = qxl_device_init(qdev, pdev);
109	if (ret)
110		goto put_vga;
111
112	ret = qxl_modeset_init(qdev);
113	if (ret)
114		goto unload;
115
116	drm_kms_helper_poll_init(&qdev->ddev);
117
118	/* Complete initialization. */
119	ret = drm_dev_register(&qdev->ddev, ent->driver_data);
120	if (ret)
121		goto modeset_cleanup;
122
123	drm_client_setup(&qdev->ddev, NULL);
124	return 0;
125
126modeset_cleanup:
127	qxl_modeset_fini(qdev);
128unload:
129	qxl_device_fini(qdev);
130put_vga:
131	if (pci_is_vga(pdev) && pdev->revision < 5)
132		vga_put(pdev, VGA_RSRC_LEGACY_IO);
133disable_pci:
134	pci_disable_device(pdev);
135
136	return ret;
137}
138
139static void qxl_drm_release(struct drm_device *dev)
140{
141	struct qxl_device *qdev = to_qxl(dev);
142
143	/*
144	 * TODO: qxl_device_fini() call should be in qxl_pci_remove(),
145	 * reordering qxl_modeset_fini() + qxl_device_fini() calls is
146	 * non-trivial though.
147	 */
148	qxl_modeset_fini(qdev);
149	qxl_device_fini(qdev);
150}
151
152static void
153qxl_pci_remove(struct pci_dev *pdev)
154{
155	struct drm_device *dev = pci_get_drvdata(pdev);
156
157	drm_dev_unregister(dev);
158	drm_atomic_helper_shutdown(dev);
159	if (pci_is_vga(pdev) && pdev->revision < 5)
160		vga_put(pdev, VGA_RSRC_LEGACY_IO);
161}
162
163static void
164qxl_pci_shutdown(struct pci_dev *pdev)
165{
166	drm_atomic_helper_shutdown(pci_get_drvdata(pdev));
167}
168
169DEFINE_DRM_GEM_FOPS(qxl_fops);
170
171static int qxl_drm_freeze(struct drm_device *dev)
172{
173	struct pci_dev *pdev = to_pci_dev(dev->dev);
174	struct qxl_device *qdev = to_qxl(dev);
175	int ret;
176
177	ret = drm_mode_config_helper_suspend(dev);
178	if (ret)
179		return ret;
180
181	qxl_destroy_monitors_object(qdev);
182	qxl_surf_evict(qdev);
183	qxl_vram_evict(qdev);
184
185	while (!qxl_check_idle(qdev->command_ring));
186	while (!qxl_check_idle(qdev->release_ring))
187		qxl_queue_garbage_collect(qdev, 1);
188
189	pci_save_state(pdev);
190
191	return 0;
192}
193
194static int qxl_drm_resume(struct drm_device *dev, bool thaw)
195{
196	struct qxl_device *qdev = to_qxl(dev);
197
198	qdev->ram_header->int_mask = QXL_INTERRUPT_MASK;
199	if (!thaw) {
200		qxl_reinit_memslots(qdev);
201	}
202
203	qxl_create_monitors_object(qdev);
204	return drm_mode_config_helper_resume(dev);
205}
206
207static int qxl_pm_suspend(struct device *dev)
208{
209	struct pci_dev *pdev = to_pci_dev(dev);
210	struct drm_device *drm_dev = pci_get_drvdata(pdev);
211	int error;
212
213	error = qxl_drm_freeze(drm_dev);
214	if (error)
215		return error;
216
217	pci_disable_device(pdev);
218	pci_set_power_state(pdev, PCI_D3hot);
219	return 0;
220}
221
222static int qxl_pm_resume(struct device *dev)
223{
224	struct pci_dev *pdev = to_pci_dev(dev);
225	struct drm_device *drm_dev = pci_get_drvdata(pdev);
226	struct qxl_device *qdev = to_qxl(drm_dev);
227
228	pci_set_power_state(pdev, PCI_D0);
229	pci_restore_state(pdev);
230	if (pci_enable_device(pdev)) {
231		return -EIO;
232	}
233
234	qxl_io_reset(qdev);
235	return qxl_drm_resume(drm_dev, false);
236}
237
238static int qxl_pm_thaw(struct device *dev)
239{
240	struct drm_device *drm_dev = dev_get_drvdata(dev);
241
242	return qxl_drm_resume(drm_dev, true);
243}
244
245static int qxl_pm_freeze(struct device *dev)
246{
247	struct drm_device *drm_dev = dev_get_drvdata(dev);
248
249	return qxl_drm_freeze(drm_dev);
250}
251
252static int qxl_pm_restore(struct device *dev)
253{
254	struct pci_dev *pdev = to_pci_dev(dev);
255	struct drm_device *drm_dev = pci_get_drvdata(pdev);
256	struct qxl_device *qdev = to_qxl(drm_dev);
257
258	qxl_io_reset(qdev);
259	return qxl_drm_resume(drm_dev, false);
260}
261
262static const struct dev_pm_ops qxl_pm_ops = {
263	.suspend = qxl_pm_suspend,
264	.resume = qxl_pm_resume,
265	.freeze = qxl_pm_freeze,
266	.thaw = qxl_pm_thaw,
267	.poweroff = qxl_pm_freeze,
268	.restore = qxl_pm_restore,
269};
270static struct pci_driver qxl_pci_driver = {
271	 .name = DRIVER_NAME,
272	 .id_table = pciidlist,
273	 .probe = qxl_pci_probe,
274	 .remove = qxl_pci_remove,
275	 .shutdown = qxl_pci_shutdown,
276	 .driver.pm = &qxl_pm_ops,
277};
278
279static const struct drm_ioctl_desc qxl_ioctls[] = {
280	DRM_IOCTL_DEF_DRV(QXL_ALLOC, qxl_alloc_ioctl, DRM_AUTH),
281	DRM_IOCTL_DEF_DRV(QXL_MAP, qxl_map_ioctl, DRM_AUTH),
282	DRM_IOCTL_DEF_DRV(QXL_EXECBUFFER, qxl_execbuffer_ioctl, DRM_AUTH),
283	DRM_IOCTL_DEF_DRV(QXL_UPDATE_AREA, qxl_update_area_ioctl, DRM_AUTH),
284	DRM_IOCTL_DEF_DRV(QXL_GETPARAM, qxl_getparam_ioctl, DRM_AUTH),
285	DRM_IOCTL_DEF_DRV(QXL_CLIENTCAP, qxl_clientcap_ioctl, DRM_AUTH),
286	DRM_IOCTL_DEF_DRV(QXL_ALLOC_SURF, qxl_alloc_surf_ioctl, DRM_AUTH),
287};
288
289static struct drm_driver qxl_driver = {
290	.driver_features = DRIVER_GEM | DRIVER_MODESET | DRIVER_ATOMIC | DRIVER_CURSOR_HOTSPOT,
291
292	.dumb_create = qxl_mode_dumb_create,
293	.dumb_map_offset = drm_gem_ttm_dumb_map_offset,
294#if defined(CONFIG_DEBUG_FS)
295	.debugfs_init = qxl_debugfs_init,
296#endif
297	.gem_prime_import_sg_table = qxl_gem_prime_import_sg_table,
298	DRM_FBDEV_TTM_DRIVER_OPS,
299	.fops = &qxl_fops,
300	.ioctls = qxl_ioctls,
301	.num_ioctls = ARRAY_SIZE(qxl_ioctls),
302	.name = DRIVER_NAME,
303	.desc = DRIVER_DESC,
304	.major = 0,
305	.minor = 1,
306	.patchlevel = 0,
307
308	.release = qxl_drm_release,
309};
310
311drm_module_pci_driver_if_modeset(qxl_pci_driver, qxl_modeset);
312
313MODULE_AUTHOR(DRIVER_AUTHOR);
314MODULE_DESCRIPTION(DRIVER_DESC);
315MODULE_LICENSE("GPL and additional rights");